Roofing Shingles 2 Layers On Edges

One of the keys to over roofing is to tie the air control layer of the roof assembly to the air control layer of the wall assembly.

Roofing shingles 2 layers on edges.

Cut the final roof cap shingle in half trimming off the unfinished side of the shingle. Apply one nail in each side of each roof cap shingle. Note the 2 lb ft3 spray polyurethane foam enhancing the air seal around the extended rafters. Roof slopes between 2 12 and 4 12 can use shingles but require roof application techniques to take into account a greater potential for ice dam water backup.

Gently lift up the shingles on the edge of the roof and locate the nails holding the existing drip edge onto. This project guide is a combination of those two articles and it covers replacing the existing roof decking installing underlayment and ice dam protection laying the first row laying shingles in the field flashing ridge shingles and vents and more. Once free slide the drip edge out and discard. Apply roof cap shingles along the peak of the roof overlapping the shingles on each side of the peak.

Instead of one layer laminated or architectural shingles have two or more layers with three dimensional tabs of varying sizes. A couple of weeks ago we published a two part series showing how a local roofing contractor shingled a roof with architectural shingles. Roof slopes between 2 12 and 4 12 require a double underlayment application in accordance with section r905 2 7. Apply the final shingle with two nails through the finished surface.

How to shingle over existing shingles and how to shingle a roof how to install roof shingles shingle layout lines h. Don t be afraid to pay up to 100 for a well documented report with photos showing what they found. It can be done. Browse owens corning roofing shingles by color shingle lines price features wind resistance and or warranty to find the right roof for your home.

If you install the drip edge on top of the felt any condensation or water running down the roof surface between shingles and felt will run underneath the drip edge down the fascia and perhaps into. This foam is applied over the top of the membrane that came down from the roof deck catching the wall control layers. Roofing second layer of shingles roofing. That is the drip edge flashing is the first item installed onto the roof sheathing or atop old shingles in a multi layer shingle re roof job.

Slopes of 4 12 and above can use standard asphalt roofing applications.